#21976E
Closest named color: Viridian (#1E9167). oklch(60.3% 0.119 164.2), rgb(33, 151, 110).
Aa
Black text reads best on this color (5.71:1).
About this color
#21976E is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.119 and its hue 164°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.019 away. Black text reads best on it, at 5.71:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #21976E |
| RGB | rgb(33, 151, 110) |
| HSL | hsl(159, 64%, 36%) |
| OKLCH | oklch(60.3% 0.119 164.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #21976E | 3.67:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #21976E | 5.71:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #21976E text on white | 3.67:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #21976E text on black | 5.71:1 | AA | Lc -37.8 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E0EEE7
oklch(93.7% 0.018 164.6)
-
Step 200
200
#C7E0D3
oklch(88.5% 0.032 163.2)
-
Step 300
300
#9ECDB7
oklch(80.9% 0.058 164.7)
-
Step 400
400
#65B391
oklch(70.7% 0.093 164.1)
-
Step 500
500 (this color)
#21976E
oklch(60.3% 0.119 164.2)
-
Step 600
600
#008861
oklch(55.5% 0.117 164.6)
-
Step 700
700
#007351
oklch(49.2% 0.104 164.3)
-
Step 800
800
#005E41
oklch(42.7% 0.091 163.9)
-
Step 900
900
#054E36
oklch(37.6% 0.078 163.9)
-
Step 950
950
#092E20
oklch(27.1% 0.049 164.1)
#21976E with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #948C6C | 0.116 |
| Deuteranopia (no green cones) | #858171 | 0.112 |
| Tritanopia (no blue cones) | #00978C | 0.044 |
| Achromatopsia (no color) | #858585 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21976E
#21976E
oklch(60.3% 0.119 164.2)
- #B26292
#B26292
oklch(60.3% 0.119 344.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #21976E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.019
- Ocean Green #3D9973 ΔE 0.019
- Light Forest Green #4F9153 ΔE 0.039
- Sea Green #2E8B57 ΔE 0.040
- Blue Green #0F9B8E ΔE 0.045
- Jade #1FA774 ΔE 0.047
- Persian Green #2A9D8F ΔE 0.048
- Fern Green #548D44 ΔE 0.055
Use #21976E in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.